On Sun, 13 Jan 2002, Richard Atkinson wrote: > Does anyone have a schematic of an MSX-MUSIC chip, either the original > FM-PAC or one of the others? I am building a board to connect an FM-PAC to > a Sega Master System expansion port for the FM sounds in many Master > System games, and I need to know what is done with the WE# line on the > YM2413.
I seem to be answering my own question, for the Zemina MSX-MUSIC. However, the results I have got lead me to believe this cartridge is not much use for my project, as it cannot read from the YM2413. This also makes it useless for my planned test register investigation. I would be still be interested in hearing about other MSX-MUSICs, including the implementation inside MSX2+ machines and the Panasonic FM-PAC. > MSX MSX-MUSIC I/O locations (FOR ZEMINA MSX-MUSIC) > > 7C addr write > 7D data write > > A7 A6 A5 A4 A3 A2 A1 A0 > 0 1 1 1 1 1 0 -- A0 -> YM2413 A0 > YM2413 WE# tied low. Cartridge may only write to the chip > address decode 7C - 7D > > > Richard > > -- > For info, see http://www.stack.nl/~wynke/MSX/listinfo.html > -- > This email was forwarded via the University of Cambridge alumni email system > Visit http://cantab.net/ to update your forwarding details > -- For info, see http://www.stack.nl/~wynke/MSX/listinfo.html
